Frederick latulip



UNITED STATES FREDERICK LATULIP, OF SYRACUSE,

NEW YORK, ASSIGNOR OF ONE-HALF TO GEORGE E. LEONARD, OF SAME PLACE.

PROCESS OF CEM ENTING RIAWHIDEI SPECIFICATION forming part of Letters Patent No. 416,370, dated December 3, 1889.

Application filed June 5, 1889- Serial No. 313,142. (No specimens.)

To aZZ whom it may concern:

Be it known that I, FREDERICK LATULIP, a citizen of the United States, residing at Syracuse, in the county of Onondaga and State of New York, have invented certain new and useful Improvements in Cement-ing Raw- Hide; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to a novel method of preparing rawhide-blanks for toothed gearwheels, belts, or any other purposes; and it I 5 consists in submitting layers of rawhide to the treatment more fully described hereinafter, and pointed out in the claims.

In the accompanying drawings, Figure 1 represents several pieces of the hide after they have been prepared for cementing; Fig.

2, a detail sectional view showingthc manner in which the ligaments are interlocked by compression, and Fig. 3 a View of a finished blank. In carrying out my method the sides of two or more sheets a of rawhide, which have been previously stretched or dried, are first harrowed up with a sharp instrument to roughen and form the ligaments b and insterstices c. 0 After the sides of each piece have thus been prepared a weak solution of acid, such as sulphuric or its equivalent, is applied to the roughened surfaces of the hide to make the pieces cohere with greater tenacity. The hide 3 5 is then allowed to dry thoroughly, after which it is submitted to a coat of sizing, such as glue or cement or any suitable adhesive material. This sizing is allowed to harden so that the projecting ligaments will become 40 stiff and bony. After thus drying the layers of hide are given another coating of cement, glue, or suitable adhesive material, and then placed one upon the other and submitted to heavy pressure until the whole block becomes hard and dry. WVhen the layers of rawhide are thus compressed together, the small projecting ligaments of hide which have been raised from the surface by harrowing will project one past the other, and in the compressing operation will become tightly inter- 5o locked or bound together, and the surface of the hide of one layer will be driveninto the interstices of the contiguous layer, as more clearly shown in Fig. 2. The laminae are so thoroughly cemented or held together that it 5 5 is almost impossible to separate them, and they form a solid and almost integral mass possessing remarkable strength and durability;

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. The method of preparing rawhide-blanks, consisting in first harrowing the surfaces of several pieces of hide to form projecting ligaments thereon and interstices therein; secondly, applying to said surfaces a solution of acid; thirdly, covering them with glue or cement; fourthly, placing them one upon the other, and, fifthly, submitting them to pressure until dry, in the manner and for the purpose substantially as described.

2. The method of preparing rawhide-blanks, consisting in first harrowing the surfaces of several pieces of hide to form ligaments thereon; secondly, applying to the surfaces a solution of acid; thirdly, drying the pieces; fourthly, coating them with a sizing of glue or cement which is allowed to dry; fifthly, add- I). FREDERICK 2 LATULIP.

mark

Vitnesses GEO. G. COLEGATE,

J NO. OHAGAR.

ing another coat of cement or glue; sixthly, 

